Dayco Automatic Belt Tensioner APV2477 Tool-Oil which prevents corrosion for a

which prevents corrosion for a longer life and provides an easier fit to your vehicle

DMH3691 (x1)

Teeth: 159

Most importantly it�s what�s inside and how it�s made that really counts

Dayco Automatic Belt Tensioner APV2477 Tool-Oil which prevents corrosion for aDayco No Slack Automatic Belt Tensioner is designed to maintain constant tension on serpentine belt drives. The serpentine belt drives consist of a single belt that powers most, if not all, of the engine's accessories. To maintain the proper tension throughout the drive, an automatic, spring loaded tensioner is incorporated into the drive system geometry. Dayco's Automatic Belt Tensioner features a patented "flat spring" design that's engineered to